单项选择题

Clerk: Good morning. Can I help you
Mr. Smith: Yes, I'd like a ticket to New York 9: 15 tomorrow morning.
Clerk: ______
Mr. Smith: Single, please.

A．Single or two
B．Single or return
C．Single or double
D．Single or back
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单项选择题
Ted: Hi, Christine. ______Christine: Hi, Ted. I just bought a new camping tent. I can't wait to use it.
A．What's on
B．What's up
C．What's wrong
D．What's right
单项选择题
A．greetingB．communicationC．readingD．survival
A．greeting
B．communication
C．reading
D．survival
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